Plow



1944- c. G. STRANDLUND 2,339,225

PLOW Filed D60. 4, 1940 I I 5 Sheets-Sheet l 33|3| I .CARLG? R N D Jan.11, 1944.

, FIG. 2

c; a. STRANDLUND PLOW Filed Dec. 4, 1940 5 Sheets-Sheet 22 INVENTOR:CARL G. STRA I ATTORNEYS.

1944- c. G. STRANDLUND 2,339,225

PLOW

Filed Dec. 4, 1940 v r 5 Sheets-Sheet s INVENTOR:

. ARL e. STRANDLUNDY 4 1}; .AT ORNEYS.

c. G. STRANDLUND 5 Sheets-Sheet 5 mum M l lllllll -Yl: I'll!!! Jan.11,1944.

mmm i-| ||\ll m m 5% 2% (I' ,6 llllllllllllllllllll 4 Em Wm QM.

Patented Jan. 11,

PLOW

Carl 6. Strandlund, Moline, 111.; as slgnor to Dam & Company; Moline,111., a corporation of Illinois A plication December 4, 1940, Serial No.363,4 4101511115. (01,9747): r 4 h I This invention relates generally toagricultural implements and more particularly to tractormounted plows,in which the tractor itself serves as the supporting frame of the plow.

- The object and general nature of this invention is the provision of anintegral mounted plow having two furrow openers and especially adaptedfor use in small fields, close to fences and the like,

and at other places where easy maneuverability and short turns arerequired.

Another feature of this invention is the provision of a mounted plow inwhich the front furrow opener is disposed in front'of the rear wheels ofthe tractor and the rear furrow opener is disposed rearwardly of therear wheels. In this connection it is also a feature of this inventionto so mount the plow bodies and the tool-beam to which they areconnected so that all side thrust is taken by the tractor itself. Also,it is a feature of this invention to mount the furrow openers so thatthe thrust reaction is imposed, longitudinally'of the tractor,substantially at the rear axle. By virtue ofthis relation, the sidethrust is imposed on the tractor at a point where the vertical wheelloading is substantially the greatest and alsoat a point where steeringwill not be'afiected. However, in this connection, it isa furtherfeature of the present invention to mount the plow on the tractor andconnect the same thereto so that'the front wheel loading will beincreased, thereby inwhether a diskor a'moldboard plow bottom, or

any other type of furrow opener, is connected with the tractorsubstantially midway between the front and rear wheels thereof and topermit the rear end of the tool-beam, together with the associated rearfurrow opener, to swing generally relative to the tractor. Also, it is afeature of .this invention to provide a disk plow in which the draftconnections are arranged so that there is an excessdownward pressure'atthe front disk, over andabove that required for penetration; such excessbeing loaded onto the front end of the tractor,

thereby aiding steering. Further, it is a feature:

of, this invention to provide a floating balloonnected at its forwardends with the tractor at points below thepointiwhere the intermediateportion of the bail isconnected with the tool beam, whereby there is adownward component of force on the tool beam by virtue of the down- Yward inclination ofthe line of pull.

I Still further, another feature of this invention is theprovision ofimproved lifting connections creasing the steering effectiveness of thetractor.

one mounted in front of the rear tractor wheels and the other mountedrearwardly thereof. It

is also a feature of this invention to provide draft connections betweenthe tractor and the tool beam supporting the two disks so that there isa component of the draft pull tending to force the disks into the groundand to maintain them in their working position. It is a further featureof this invention to provide draft connections by which the draft pullis applied to the tool beam between the front and-rear disks,and tolimit the penetration of the rear disk by the use of a gauge wheel andto limit the penetrationof the front disk by suitable connections with.the tractor, whereby the tractor wheels serve as gauging means for thefront disk. In this connection it is a still further feature to providea plow of this type with moldboard openers, in which suitable tlon'isthe provision of means for shifting the tool beam laterally relative tothe tractor'so as to ,for an integrally mounted two-bottom plow in whichthe rear furrow opener is raised out, of the ground substantially at thesamepoint thereon at which the front furrow opener was lifted.

Another important featureof thepresent invention is the provision of anintegral plow with a sturdy guide wheel disposed laterally so asito runin the last previously opened furrow, with connections so that the guidewheel may, when necessary, be arranged to take some of the downwardpressure at the, front furrow opener and.

moreover, serve actually. to hold. the tractor against tipping. Anotherfeaturejof this =:invencompensate for creeping of the tractor ona'hillside-or in other words, a lateral adjustment is provided toparallel the tool beam with the line of travel. In this connection, itis still another feature of the invention to provide means for adjustingthe angle of each disk individually and to automatically retain theproper position of the disk scraper relative to the disk in any adjust dp sition thereof.

These and other objects and advantages of the present invention will beapparent to those skilled in the art afte'ra consideration ofthe-following detailed description, taken in conjunction with theaccompanying drawings illustrating the preferred form of the invention.

In the drawings; 7 Figure 1 is aplan view of a disk plow in which boardbottoms are used;

' front wheels The latter is of conventional construction and is theprinciples of the present invention have been incorporated;

Figure 2 is a side view .of the plow shown in Figure 1; r

Figure 3 is a perspective view of the front end 7 of the plow beam,showing in particular the connections between the front end of the plowbeam and the tractor, also the front guide wheel;

Figurei is a perspective view showing the rear end construction of theplow;

Figure 4A is a perspective view showing one form of attachment for thefurrow openers;

Figure 5 is a plan view of a modified form of the present invention,using moldboard furrow openers instead of disks as shown in Figures 1and 2; a

Figure 6 is a side view of the implement shown in Figure 5;

Figure '7 is a generally along fragmentary sectional view, taken theline 1-1 of Figure 5, showing the means for leveling the tool beam whenmold- Figure 8 is a plan view disk plow embodying the principles of thepresent invention;

Figure 9 is a side view of the implement shown in Figure 8;

Figure 10 is a fragmentary sectional view taken along the line Iii-40ofFigure 9;-

Figure 10A is a view similar to Figure 10, showing therelative movementpermitted between the guide wheel support and the guide wheel supportbracket; and

Figure 11 is a view taken along the line ii-II of Figure 8. I

Referring now more particulariyto Figures 1 and'2, thetractor isindicated in its entirety the reference numeral 1 and, in order to-showthe construction'of the plow beam and associated parts, is shown indotted lines in Figure l. The tractor i is ofthe well-known tricycletype having 2 and rear wheels '3 and 4 secured, respectively, to axleshafts 5 and! mounted for rotation in extensions axle, indicatedbythereference numeral 9. The tractor l also'includes a source of power Inmounted" on' or *forming a part of the tractor frame H, thelatterincluding spaced apart side frame bars I! (Figure 3);

The implement proper is indicated by the refof a modified form of ceivedin a disk spindle bearing assembly 32,

which includes upper and lower plates 33 and 34 which are apertured toreceive and are welded to a. tubular bearing member 35, the upper end ofwhich is welded to a disk spindle adjusting arm 36. The plates 33 and 34are spaced apart the vertical dimension of the rear end of the main barl6 and are apertured, as is the rear end of the bar It, to receive apair of attaching bolts 31. The disk standard 3| is received Within thetubular bearing portion 35 of the spindle assembly 32 and has its upperend projecting therefrom. This end is provided with a short taper square31a upon which they square socket end 38 of a disk angling arm 39 isfixed, as by a nut 40. The arm 33 extends beyond the arm 36 to receivescraper supporting means which will be described below. The arm 36 isprovided with a plurality of holes to receive a bolt 44. The latter maybeinserted in any one of the several holes 42 in the arm 38 I and 8 ofthe tractor rear. 7

'erence numeral l5 and includes a-tool'beafn or v main bar 1 8 having agenerally longitudinally exil and a rearwardly and iat- V 'erailyoutwardly extendingrear end i8. the in.-1

the bar]! being bent sub--. in Figure 1."- As best shown p in Figure 2,the front end i1 is connected-to the .j J scraper. 59 moves with thedisk and no main body of the bar tending front end termediate portion ofstantially as shown Figure l, the tool bar wellbeyond the central whilethe rear end extends rearwardly of the rear wheels 3 and 4. According tothe present inven-' tion two furrow openers are fixed to' the bar it,the front opener being 7 and laterally outwardly directed section 2| ofthe bar it while the rear furrow opener is fixed to the laterally andrearwardly directed section 18, the sections l8 and 2| extendingsubstantially in parallelism. Preferably, the furrow openers are in theform of disks, but they may be moldboard bottoms or any other suitableground working tools if desired.

Therear furrow. opener consists of a disk 25.

l 8' by a downwardly and.. rearwardly inclined section 20'. As bestshown in It extends between the rear" wheelsi and 4 and the frontend ofthe bar lies portion of the tractor 3,

secured to a rearwardly and so hold the disk 25 at the desired angle. Ifit should benecessary to change this angle, all that it is necessary todo is to remove the bolt 44 and insert it in one of the other holes 42in the adjusting arm 36, whereby the angling'arm 39 is fixed in its newposition.

The front furrow opener is also a disk, indicated by the referencenumeral 45, and the same is mounted onto the front section 2! of thetool beam or bar I6 by a spindle. assembly and associated parts of thesame construction as just described. Therefore, identical parts havebeen indicatedbythe same reference numerals.

. Each of the disks 25 and 45 is provided with -a I scraper assembly 50,Each includes a'blade 5| secured to a generally vertically disposedstandard 52. The lower end of the latter is flattened and issecured, asby bolts 53, totheblade 5i. 'Each'standard or shank 52 is receivedwithin a pair of generally semi-spherical pivots 55 which are flrmlyheld between a clamp arm 58 and a clamp cap 51, the latter being boltedto the arm 56,-as shown at 58. The clamparm 56 is secured .j by bolts 59to the outer end of the disk angling arm 39 associated therewith. Hence,whenever thebolt .44 is removed and the disk given a new 'anglebyshiftingthevarm 33 relative to the arm new adjustment of the latter isnecessary. However, bylvirtue'of the ball and socketmounting of thescraper standard 32 on the clamp arm II, thescrape'r'blade 51 may besecured in any necessary position, relative to thedisk itself.

: The plow beam i6 is connected with the tractor at both its forward andrear ends. At its front -ca.1 movement betweenthe legs El and 62 of 8-end the tool bar or beam "is mounted for vertiframe bar guide, indicatedin its entiretyby the reference numeral 63. The latter comprises a strapmember formed with the legs 6i and 32 and with laterally outturned ends64 and 85, which are apertured and receive a closure strap 86, thelatter being secured to the ends 64 and 65 by bolts 61 and 68. A bracketsection II is welded, as at 12,.to the upper portion of the guide 63 andis bolted, as at 69 and 10, to the frame angle frame angle opposite theangle I2.

I2 of the tractor. -"I'he bracket II is extended ed. The lever I3 formsa part of depth adjusting mechanism indicated in its entirety by thereference numeral 80. A shortsleevejJS is pivoted, as at I5, to thedepth adjusting lever 13 and receives the upper end of a depth adjustingrod 11. The upper end of the latter is threaded and carries an adjustingnut I8 limiting the'downward movementof the rod 11 in the'pivot sleeveI5. The lower end of the depth adjusting-rod TI is provided with an eyewhich is connected by a pin 19 to two plates 8| and 82 which are bolted,as at 83. to opposite sides of the tool beam I 6, as best shown inFigure 3. The plates 8| and 82 form a part of the guide wheel structure,indicated in its entirety by the reference numeral 84, which will bedescribed below.

The depth adjusting lever I3, swinging about the pivot 14, moves/along asector or ratchet member 85, one end of which is bolted. as at 86. tothe tractor and the other end of which is bolted, as at 81, to a pair ofbraces 88 and 89, the latter being bolted to the tractor at any I,bearing assembly 32 to the tool bar I6. A sector I rearwardly, as.atHo, and receives the pivot bolt I3I is welded to the'plate I 29 and isnotched for I4 on which a depth adjusting lever 13 is mount-,-'

suitable point while the link 88 is connected with cooperation withdetentrmechanism I32 which is carried by a gauge wheel adjusting leverI33. The latter is provided with an enlarged lower end which is pivotedon the gauge :wheel crank axle I21 and above the lower end is aperturedto receive a bolt I34 which is adapted to be in-'.

way, swinging the front depth adjusting lever "I3 in one direction orthe other raises or lowers the front end of the tool beam, and hence thefront furrow opener, relative to the tractor, the wheels of which may beconsidered as serving as gauge wheels for the front furrow opener:

The tractor is connected with the tool beam I5 by draft and stabilizingconnections indicated generally'by the reference numeral I 40; Suchconnections include, first, a bail pivoted to" the tractor for swingingmovement, and second,

' laterally shiftable means connecting the. tool an adjusting bolt84,is' fixed, the lower end of V brace 98, one end of which is securedto the guide 53 by the bolt 68 and the other end of which is secured bya bolt 99 to the tractor The spring 95 serves to counterbalance theweight 'of the parts connected through the depth adjusting rod 11 to thelever I3.

A guidewheel H0 is bolted, as at III, to a wheel bearing member II2which is journaled on the lower outturned end II 3 of a guide wheelcrank axle N5, the upper laterally inwardly directed portion of which isreceived for rocking movement in a sleeve IIG which is'pas'sed throughopenings in and weldedfto the plates M and 82 that'are boltedtwthexfrorit'end of the tool bar IS. The sleeve 8 extends laterallyo'utwardly a substantial distance and at its outer end has weldedthereto a sector III adthe sector Hi. .When unlatched'the lever II8 maybe swing in one direction-or the other to raise or lower the guide wheelIIII. Thecrank axle II 5 is held in place in'the sleeve H8 by a quickdetachable pin or the like.

A gauge wheel I25 is mounted at the rear of v the tractor alongside therear furrow opener. Thd'rear gauge wheel is fixed toa bearing memberI25,'which may be identical with the bearingmember IIZ/fer'the frontguide wheel III), and the beefing member I26 is mounted on the laterallyouter end of a gauge'wheel crank axle I21, the inner end of which isreceived in a. sleeve I28 that is welded or otherwise fixed to a plateI29 that is bolted to the rear end I8 of the tool bar I5 by the samebolts 31 that secure the rear plates 33 and '34 "of the rear spindlebeam I6 to the bail.. Asa result of this-construction', the rear end ofthe plow may-rise .and fall, by virtue of'the swinging bail connection,yet receive full forward draft from the tractor -at allytimes. v V

The bail member is *indicated in its entirety by the reference numeralHI and comprisesa frame ball I42 having a forwardly extending leg I43,which normally extends. forwardly and downwardlm as best shown in Figure2, anda socket andsecured to the frame bail'I42 by a nut I 46. Thebracket I45 is secured' to thebail 7 be described below. The forwardends of the two arm sections'I4-3 and I44 of the bail I are plvotallyconnected; as by quick detachable'pins I5I, to the lower ends of a pairof bail hangers I52, each consisting of a hanger plate I53 and a pair ofvertically disposed spaced apart straps I54 depending therefrom andwelded theretoor otherw se secured'at their upper ends to theassociated'hanger plate I53. A pin -I55 and a bushing I56 is used tomaintain the lower ends of each pair of hanger straps I54 in the desiredconsists of a sleeve or pipe member I6l to which is welded or otherwisefixed a pair of hanger plates I62 and I68, spaced apart and dependingfrom the sleeve I6I.-v The plates I62 and I63 are adapted to receive therear end H of the tool bar I6,'andto this end are apertured to receivebolts I64 and I85 which pass,'respectively, across the lower and uppersides of the bar I6, as best shown in Figure 2. The central bail sectionI42 is rockably received within and serves to support the sleeve 'I6I. Asmall bracket I66 is, welded to the laterally inner hanger plate I62 andis apertured.

of which extends downwardly and is received in an opening in ahorizontally swlngable bell crank Ill. The latter is pivotally mountedin a barrel section I16 that is formed on the bracket I45, the

bell crank I13 having a pin' IISwelded theretoand extending through thebarrel section I15. A cotter pin or the like is passed through a hole inthe lower -end of the pin I16 to retain the bell crank I18 in position.A link I'II has a downtumed end I18 inserted into an opening inone armof the bell crank .I'I3and is extended forwardly andat its forward endis provided with a laterally inturned portion which is extended througha clip I19 fixed to a landinglever' I88. The latter is pivoted on a boltI8I that is carried at the lower portion of the sector I48, which isfixed to the bail arm I by the bolts I", as described above. The leverI80 carries detent mechanism I82 which cooperates with the sector 8, tohold the lever in any position of adjustment. The ball hangers I52 arereenforoed by a hanger brace I85 which is bolted at its rear end, as'atI56, to the associated hanger bracket and at its forward end isconnected, as bya bolt I81, to an angle bracket I88 bolted to theforward sides of the associated rear axle housing.

Suitable. lifting mechanism is provided whereby l the front disk israised before the rear disk, the

arrangement being such that in normal plowing gear, the rear disk is notraiseduntil it reaches the point at which thefront disk was raised. Thetractor.I is provided with a power lift unit by actuating the tractorpower lift I80 to swing threaded and screwed into a sleeve III, a lugI12 A indicated in its entirety by the reference numeral I98 andincluding a rock shaft I9I to which'an arm I92 is fixed. The outer endof the arm I92 5 isconnected by a link I83'to a lifting bell crank Ill.The latter is pivoted, as at I95, to the upper end of the right-handangle bracket I88, and to I this end the latter is provided witha bellcrank bearing sleeve I96 (Figure l). The forward end v of the bell crankI94 is apertured to receive a pin I98 which is inserted in. any pair ofa plurality of pairs of holes formed in a lifting chain clevis I89. Alifting chain 2III is connected at its upper end to the clevis I99 andat its lower end is connected by a clevis 202 to, a tool beam bracket203, the latter consisting of upper and lower strap. members 204 and 205connected together by bolts disposed on opposite sidesof the tool barI6, forwardly of the center of gravityof I the tool beam and the furrowopeners and associated parts. The tractor power lift unit I88 includes apedal 286 or some other part by which the operation of the power liftunit In may be controlled. When the arm I92 swings rearwardis. the bellcrank I64 exerts apull through the the arm I92 forwardly, the partsmoving into the positions shown in Figure 2. Fromthis figure it willbeseen that as the tractor is driven forwardly the pull which istransmitted from the tractor to the implement through thebail MI isexerted in the downward direction, so that there is a downward componentof the. draft exerted the gauge wheel I25. In effect, therefore, the'dow nward component of the draft pull acts to swing the tool beam I8 ina clockwise direction about the rear gauge wheel I25, thereby securingpenetration of the front disk. In addition, the forward component of thedraft pull, as exerted through the bail Ill, also insures that the frontdisk will penetrate, since the center of soil pressure against it isbelow the horizontal component of the forward pull. The penetration ofthe front diskis, however, limited by the connections between the frontend of the tool bar I6 and the lifting lever, I3, which is adjustablyfixed in position on the tractor, auxiliary adjustment being availableby the nut 18. In effect, therefore, the

tractor itself serves as a gauge wheel for the front disk, inasmuch asthe penetration of the front disk is controlled by the position of thedepth adjusting lever 13 on the tractor. Normally, the front end of thebeam I8 is about in the central part of the slotted bracket 68, midwaybetween the lower strap 66 and the upper bumper 2Ill.--

As one result of this arrangement some of the downward component'of thedraft pull, which maintains operating depth at the front tool, isimposed through the link 11 and the lever I3 onv the tractor forward .ofthe drive wheels, and hence the loading on the front steering wheels 2is increased. Not'only does this tend to prevent the tra'ctor'fromrising at the front end but, in addition, it enables the operator tosteer the tractor at all times,inasmuch as the front wheels 2 bearfirmly on the ground. If desired, the guide wheel III), which runs inthe last previously opened furrow, may be so adjusted, as shown inFigure 2, that it does not engage the bottom of the furrow but operatesprincipally against the side wall of the furrow and is effective to keepthe tractor from drifting landward away from the furrow. In this case,therefore, all of the guide wheel IIII may be lowered until it runs onthe bottom of the furrow and'relieves the tractor of some of thedownward pressure. Thus, the operator is enabled to adjust the implementfor the conditions encountered. In soft ground, therefore, where theresidual downward pressure on the tractor may be considerable, the guidewheel H may be utilized to-sustain a part, if notguide wheel I I0 mayberaised into a position out of contact with the bottom of the furrow, sothat there is some additional loading, other than the static weight ofthe tractor, imposed on the front wheels. The front end I1 of the toolbeam I6 is free to move upwardly in the guide 63. Hence, if the frontdisk 45 encounters anobstruction, it can roll over the same due to theupward movement permitted.

Since the front and rear tools 25 and 45 are disks, there is sidethrustwhich must be taken care of. It will be seen from Figure 2 thatthe front and rear disks are arranged approximately equal distances infront of and in rear of the tractor rear axle. imposed on the tractorsubstantiallyin line with the rear axle. This is where most of theweight of the tractor is borne, and hence this is the part of thetractor best adapted to sustain this side thrust. Moreover, beingimposed substantially at a point in the transverse vertical plane of therear axle, the steering of they tractor is unaffected by the-presence ofsuch side thrust. Moreover,

if conditions should be such that the effective point of side thrust mayvary fore andaft of the rear axle, the additional loading on the frontwheels, mentioned above, enables the farmer to maintain an accuratesteering'at all times.

When operating on a hillside where the furrow is usually turned downhill, the guidewheel H0 serves a dual function, and is an importantfeature of this implement. As best shown in Figure 1, the guide wheel H0is disposed laterally outwardly a considerable distance from the line Iwhich extends from the front wheels? to the right-hand rear wheel 3,this being the line about ing the tractor uphill, which means that thelongitudinal axis of the tractor is disposed at'an angle to the actualline of travel. necessary to maintain the longitudinal axis of the plowin the same direction as the line of travel in order to secure a uniformwidth of out. Therefore, according to the present irivehtionQI have Iprovided means for shifting'the rear end of the tool beam laterallyrelative tothe tractor in or-- der to line up the plow with the line oftravel.

As will be clear from-Figure 1, swinging the landing lever I30 in onedirection or the other will act through the bell crank H3 and link I68"to shift.

the bracket I60 along the bail HI, thereby shiftmg the rear end of thetool beam and enabling Therefore, the side thrust is the farmerto Y keepthe same aligned with the:

line of travel., This arrangement also permits the farmer to vary thewidth of cut, as desired, either when operating on a hillside oroperating on a level. Further, the dislm may be individual- 1y adjustedby removing the'bolt 44 and inserting it in one of the other holesformed 'in'the arm 36; With the individual disk adjustment and thealigning adjustment just described, the implement of the presentinvention isa flexible outfit and may be adjusted to accommodateanycondition that may be encountered.

Referring again to Figure 2 it will be seenthat,

in effect, the tool beam l6 is'pivoted at its front end for generallyvertical swinging movement operate above the bottom of the furrow, thenthe vertically relative to the tractor.

which the tractor might tend to tilt, clue to the slope of the hill andthe downward pun of the furrow openers on the tractor, which areaccumulative so far as the front furrow opener is concerned, since thisis disposed to the right of the line 1. When operating under conditionsof this kind it is usually desirable to adjust the guide wheel H0 sothatit runs along the bottom of the previously opened furrow, and thustakes a considerable part of the downward pressure at the front disk.However, if the slope of the hill should be steep enough that thetractor itself tends to tip laterally, the gauge Wheel H0 and associatedparts, which are of adequate strength to sustain the weight of thetractor, prevent the latter from tipping over. As will be clear fromFigure 3, if the tractor should start to tip, the

bumper 20! moves downwardly into engagement with the front end of thetool beam l6, after about a generally transverse axis. That is, if theguide wheel H0 operates along the bottom of the furrow, the axis justmehtioned is defined bythe guide wheel itself. If the latter is adjustedto axis is defined by the connections between the front end of the beaml6 and the tractor which permits such vertical movement. During suchpivotal movement the bail HI swings generally This arrangement, ineffect, provides a plow which can float relative to the tractor and hasthe importantad-J I vantage that uniform plowing depth is ,maintainedeven though the tractor passes over ridges or across gullies,depressions and the like. Since v the front tool is gauged from thetractor and is disposed substantiallymidway between the front. I andrear wheels of the tractor, as the latter crosses a depression theplowing depth at the front tool is substantially unaffected, except asthe point between the tractor wheels is slightly lower I than the pointswhere the tractor wheels engage the ground. This diiferenceis, however,immaterial. The rear tool 'is permittedto'swing upwardly by virtue ofthepivoted bail connection, whereby the plowing depth at the reartool-as de-- termined by the rear gauge wheel I25 is maintained eventhough the plow as a whole is disposed at a considerable angle in avertical direction relative to the-tractor. As will be obvious, the plowaccommodates the opposite condition, namely, passing over a ridge, insubstantially the i same way, except that the bail swings downwardlyinstead of upwardly. Mention was made above of the fact that by virtueof the swinging bail connection at the rear, the beam IS, in effect,swings about a transverse axis adjacent its forward end.

However, it may alsobe considered that the tool i beam swings about atransverse axis at the rear end thereof so far as securing adequatepenetra tion of the front disk is concerned, I such rear transverse axisbeing defined by the engagement of the rear gauge wheel I25 with theground, in

which case the draft transmitting bail is ar- It is, of course,

To detach the plow from the tractor all that it is necessary to do is toremove the two pivot pins I 5 I which preferably are of the quickdetachable type'and disconnect either of the clevises I or 202. Next,the. three bolts 31 fixing the forwarddisk unit to the front end of thebeam will be removed and the disk, together with the scraper and angleadiustinga'rms, placed to one side out of the path .of travel of theright-hand rear tractor wheel. Then eitherthe upper or lower end of thedepth adjusting rod 11 will be disconnected from the associated part,and lastly, the quick detachable pin at the laterally inner endcof thecrank axle H5 is removed, whereupon the guide wheel I I and the lever II8 can be shifted outwardly and away from the path of'travel of theright-hand rear tractor wheel. The tractor can then be driven forwardlyover the front end of the beam I6, which then rests on the: ground afterit drops from the slotted bracket '82. i, v

It is usually preferable beforedisconnecting the plow to swing the gaugewheel I25 down into contact with the ground so that the rear end of theplow will rest on the rear furrow opener and the rear. gauge wheel I25in upright position.

the tractor. 2 7 g when connecting the plow-to thetractorvsubstantially' the above described steps repeated. First. thetractor is backed intoposition with the front end of the. tool beam onthe slotted bracket 58. With onecof the bolts 61, it removed and theother loosened, the bar 65 may be swung to one side and the beam I 8lifted Next, the front diskand guide wheel are attached, and then theforward ends of the bail I52. This may be easily'accomplished in thismanner. Remembering that the rear endof the plow is resting on the'rearjdisk and the rear gauge'wheei I25, swinging the lever I23 servesto tilt the ball I laterally. The bail I may be raised and loweredbodily about its axis ofconnection at the bracket I50 by'swingin'g thelanding lever I80but leaving it connected to the sector I48. Further, byunlatching the lever I82 bail itself may be shifted laterally in thebracket the exact position when it is driven into place, the bail I4Imay be-shifted latera1ly,'tilted and/or,

the proper connection at the pivots I5I.

the present invention havejbeen shown asincorporated in a disk plow,this invention is not to be limited to the use. of. disk type furrowopeners, sincemoldboard plow bottoms or any other type of furrow openersmay be used where desired. For example, in Figures 5 and 6 there isshown a plow constructed according to the principles of the presentinvention, using moldboard plow bottoms. Such modified format the pres-'ent invention will now be described.

The moldboard plow attachment is indicated in its entirety by thereference numeral 2 I5 and This is to facilitate reattaching theimplement to ground substantially directly underneath the into the spacebetween the-arms of the bracket eb y the rear co ter is the same as thefront 22. Then the bar SS'isiixed in position and the depth adjustingrod 11 attached to the beam,

arms can be attached to, the hanger brackets from the sector I48 andswinging the lever, the

I60. Thus, even though the tractor is notin swung vertically asdesiredin order to enact While, as described above, the principles ofassaaas includes atool beam or main bar III having a front end 2" and arear end 2| 8 disposed generally in the same horizontal plane, with theintermediate portion of-the bar, as at 2", being the construction-shownin Figures 1 to 4, the tool bar extends between the rear wheels 2 and 4of a tractor, the front furrow opener being indicated at 225 andcomprising a moldboard plow bottom fixed to a standard 226, the upperend of which is secured by a U-bolt 221 and an attaching casting 228 tothe front end portion of the tool bar 2". As best shown in Figure 5, thefront plow bottom 225 is disposed directly forward of the rear tractorwheel 3. The rear The plow beam 2| is connectedwith the trac-' tor atthe front end of the beam 2| 5 by means of a frame bar guide which isthe same as the guide 52 described above, and therefore the samereference numerals have been used. A

forwardly and laterally outwardly disposed brackat 235 is fixed to thefront end portion of the beam M5 and receives a colterstandard 225.

m The latter is fastened by a bolt 23'! to the bracket lower bent end ofthe standard 232 and rotatably Ls-provided for the rear plow bottom 22I, and pref- In Figures 5 and 6, the tractor I is provided with a pairof bail hangers, which may be iden- The ball hangers are adapted topivotally receive the forward end portions of a bail member which meralsas in Figures 1 to 4. However, the means connecting the tool beam to thebail is slightly different. In this form of the invention, a sleeve 254is slidably mounted on the, central bail portion I42 and is adapted tobe shifted laterally relative to the tractor by any suitable means,under the control of the operator on the tractor, such as the link I58,the hand lever I80, and associated part asshown in Figures 1, 2 and 4.However, in the form of the invention shown in .Figures 5 to 7, the plowbeam is not fixed directly to the sleeve 254, as is the arrangementshown in Figure 1 et al. but, instead, carries a pair of interconnectedplates 251 connected together by a strap 255 and fixed, as by a setscrew 256, to the rear end of the plow beam 2I6. The shiftable sleeve254 lies between the lower part of the plates 251 and includes anapertured lug 252 through which a pivot bolt 259 carried by the plates251 extends. To land the plow bottoms 225 and 23I, an adjusting crankscrew 263 is anchored, as by a pair of collars 264, to an extension 265of the forward plate 255. The other 15 end of the orank'screw 263threads into a nut bent to clear the rear axleextension 1. Likeplowbottom is indicated by-the reference nu- I 2I8 of the beam 2 in the sameway. Hence,

235 by a clamp casting22l and the latter is fa's-. t'ened by, a bolt 22!to one side of the bar 2". By loosening, the bolt'2l1, the standard 222maybe rotated, to a new position or shifted generally vertically, asdesired. ,A yoke 2' is fixed to the receives a rolling colter. 242. Therolling colter 242 is disposed in the plane of the landside face of thefront furrow opener 225. A rear colter -tical with the bail hangers I52described above.

I tical with those shown in g ..The front end of the beam 7 'wheel withadjusting mechanism therefor, and the frame-bar M6 is connected itsforward end "with depth adjusting mechanism, but since these main bar "Iof approxlmatelythe configuramember 23'! carried between a pair of lugs200 on the sleeve 2". Thus, by turning the crank screw 203 in onedirection or the other. the tool beam 2" may be rocked laterally on theball I. In this form of the invention the link I may be connected to theshiftable' sleeve 2 by a bracket 200 welded to the latter. l

The rear gauge wheel for this form of plow is preferably identical tothe gauge wheel unit shown in Figures 1 and z and described above. Aplate l20a (Figure is fixed to the rear end of the beam 2|6 by bolts31:; and receives the 'other parts of the gauge means which are for thesake of clarity indicated by the same reference numerals since suchparts are identical. In Figure 6, portions of the gauge wheel unit arecut away to show other parts to'better advantage.

The power lift'arrangement in this form of the invention issubstantially the same as has been described above, and hence furtherdescription is not necessary. In Figures 5 and 6, parts iden- Figures 1and 2 are indicated by the same referencenumerals. 2|.0 carries a guidemechanisms are preferably identical, respectively, with the guide wheeladjusting mechanism 8a and the depth'adjusting mechanism 80 describedscription is unnecessary. Due to the 'coulter bracket 235-, itis-preferablein Figures 5 to! to connect the plates and 02. with. thebeam r as by welding 3I3. The upper end of the disk 3 is suitable fixed,as by welding, to 3M which are 'apertured to receive bolts 3l 5 whichare adapted to be inabove in connection-with the first form of thisinvention, it is believed that further de- The rear furrow opener isalso in the form of a :2i6 forward of the guide bracket 53, rather than:7

inrear of the same as in Figures 1 to 4.

- The operation of this form of the present in vention is substantiallythe same as the operation of the form shown in Figuresl to' 4 and havebeen applied.

need not be repeated. If it is desired, the mold-.

board bottoms out landsides, one bottom is counterbalancedby the sidethrust of the other bottom, both being sustained by thetractonsubstantially at a point ingthe. vertical transverse plane of therear wheels. 'Also, this plow is adapted to conform to irregularities inthe ground surface with the same effectiveness as the first describedform; The plow beam 2|6 may be leveled sothat the furrow openers 225 and23l run in a level position byturning the crank 263 in one direction orthe other. The chain 20l is connected to the beam 216 at a point Justslightly 225 and 231 may be utilized withthe front end of the beam H6 isfirst lifted and then, at about the same time that the rear bottomreaches the point on the ground where the front bottom was raised, therear 'end of the beam is raised. Normally, the chain is slack.

In Figures 8 and 9 I have shown a modified form of disk plow, somewhatsimilar to but in certain respects more simple than the disk plow shownin. Figures 1 to 4; and in that respect an improvement over the forms ofthe invention de reference numeral 300, comprises a tool beam or inwhich case the side thrust of forward of the center of gravity, wherebywhen the lifting mechanism is actuated,

'tially straight rear section 303 tion and inserting the tlon of thebeamor bar It described above in connection with Figure 1. The tool-beamor bar 30l,in the present instance, includes a substantiallystraightforward section 302, a substanwhich passes unla of the tractor.304, and a rearthe end of the section is provided with a pair ofapertures, and- 305: is likewise.

the rear end of the rear'section apertured. A front furrow opener in theform "'of"*"a"disk 3l0' is mounted for rotation in any suitable mannerat the lower end of a bearing standard 3 of conventional construction,to the lower end of which a, bearing M2 is fixed,

standard upper and lower plates serted and fastened in place in theapertures in the forward portion of the tool beam section 301. The diskstandard bracketplates are provided with one or more additional openings3|! (Figure 8) so that by removingtthe associated bolt 3!! andshiftingthe bracket to'a new posibolt iii in other openings, the angularposition of the front disk II.

the center line.

may be changed relative tothe tool beam 30f.

' disk, and since the rear diskis identical with same reference numeralsthe frontldisk, the

The rear disk bracket may be adjusted relative to the tool beam 30I inthe same manner as described above. Each disk 0 has a scraper 3!! whoseshank is fixed by an adjustable clamp M3 to the upper end of a curvedscraper standard 3l9 which is fixed in any suitable way to the upperplates 3.

The front end 302 of the tool beam 30f is received between the side barsof a guide bracket, indicated in its entirety .by the reference numeral320. The guide 320 is similar to the guide 63 described; above butdiffers therefrom in certain respects. However, like the guide 63, theguide bracket 320 includes inner and outer vertical bars MI and 322having laterally outturned lower ends to which is bolted a closure strap323. Secured to the upper end, of the bracket straps 32! and 322 is anattaching plate 324 which is bolted to the tractor, as at 325. Thebracket straps 32| and. 322 form, in effect, member, the upperintermediate portion of which serves as, a stop to limit the upwardswinging movement of the front end 302 of the tool beam 30| and may beprovided with a bumper at this point, if desired, as described above inconnection with the first form of this invention, but

preferably in this form of the invention the bumper takes the form of aroller 450 (Figure '9) mounted on a pin or bolt 449. The lower end ofthe strap 32! is extended latan inverted U-shaped connected thereto. Thelatter includes detent mechanism 331 which cooperates with a sector 332one end of which is fixed, as at 333, to the tractor and the other endof which is fixed to the upper end of a strap 335. The lower end of thelatter is connected by the pivot 328 to the bracket 321. A link 342extends vertically through a sleeve 343 which is pivoted, as at 344, tothe adjusting lever 329,'and the upper end of the link 342 is threadedand receives a pair of lock nuts 346. The lower end of the link isformed as a hook and engages in an aperture in a clip 341 which issecured by a U-bolt 348 to the forward portion of the tool beam 301. Byreleasing the .detent mechanism 331 and moving the lever 329 todifferent positions, the front end of the tool beam 301 may be raised orlowered, as desired, thus adjusting the depth ofoperatlon of the frontfurrow opener 318.

A front guide wheel is connected to move-generally vertically with thefront end of the tool bar 3111, much in the same manner as the guidewheel 119 described' above, but in the instant modification, separateadjusting means for the guide wheel has been eliminated. In this form ofthe invention the guide wheel is indicated by the reference numeral 355and is journaled for rotation on the laterally outer end of an axle 356.The laterally inner end of the latter is provided with a square taperand is received in the socket section 359 of a. bracket casting 361. Thelatter member is provided with a longitudinal sleeve section 362 inwhich "the forward end of the tool beam 301 is received. This end of thelatter is provided with anaperture 363, and registering apertures areformed in the sleeve 362 to receive a bolt 365. The latter is smallerthan one or more of the apertures just mentioned so that the sleevecasting is capable of limited rocking movement on the front end of thetool bar 3111. However, such rocking movement is limited by virtue ofthe particular cross sectional conform of the invention the bail 3111includes an infiguration of the opening in the sleeve-362 through Iwhich the front end of the toolbar 301 extends. As best shown in Figure10, this opening, which is indicated by the reference numeral 361, isgenerally of star section presenting four curved walls between which thesquare end of the tool bar 301 is received. As indicated in Figure 10A,after the sleeve 362 and guide wheel axle 356 associated therewith haverocked relative to the tool bar through a limited amount, furtherrelative rocking movement in that direction is prevented. Preferably,the construction is such that during operation the wheel 355 serves 1-to run along the previously formed furrow and serves as a guide ormarker to assist the operator in maintaining uniform width of plowing.The relative movement permitted affords a certain freedom of action ofthe guide whee1 355 so that travel over irregular ground isaccommodated. However, if the tractor should start to tip over, as issometimes encountered in hillside Work, the guide wheel 355 is availableas an auxiliary support preventing overturning of the tractor, insubstantially the safne manner described above in connection with theform of the invention shown in Figures 1-4. The guide whee1 andassociated parts may be easily removed from the tool beam 391 merely bydetaching the one bolt 365.

The rear and of the tool beam 381 is connected with the iractor by abail indicated in its entirety similar to the bail Mi described above.In this termediate section 311 with which the tool beam 301 isconnected, as will be described below, and a forwardly bent arm section312, the forward end of which is flattened and apertured to receive apivot pin 313 by which this portion of the bail 311 is pivotallyconnected to a vertically extending bail hanger 316. This membercomprises a pair of straps 311 and 313 (Figure 8), and the upper ends ofthese straps are extended above the rear axle section 1a and is directedforwardly to form a power lift bracket 319. A brace 381 is bolted, as at382 (Figure 9), in between the lower ends of the bracket straps 311-and318 just above the pivot 313. The brace 381 is welded to a plate 385,and a similar plate 386 is welded to the forward edges of the bracketstraps 311 and 318. These plates are fastened to the rear axle housingsection 1a by any suitable means. The brace 381 extends forwardly andupwardly beyond the attaching plate 385 and is pivotally connected, asat 388, with the lower end of a hydraulic piston and cylinder unitindicated in its entirety by the reference numeral 389. The upper partof the hydraulic unit 389 .is pivotally connected, as at 391, to theintermediate portion of a lifting link 392, the rear end of which ispivoted, as at 393, to the bracket 313 and the forward end of which ispivoted to a swivel 396. A lifting chain 391 is connected at its upperend to the swivel 396 and at its lower end to a bracket 398 which issecured by bolts 399 to the tool beam 301, preferably forwardly of thecenter of the tool beam. Fluid under pressure is supplied by anysuitable means to the hydraulic unit 389 through a hose 461. Preferably,the source of fluid pressure is carried by the tractor. a

The other arm of the bail 318 is c ned as a separate part and takes theform 01 an arm 418, the forward end of which is pivoted, as at 41 1, inbetween the lower ends of a pair of straps 412 forming the left handbail hanger 413. A brace 4119 (Figure 8) connects the lower end of thehanger 413 with a plate 413 which is fixed to the forward side of theleft hand axle, housing. A sector 415 is secured to the bail arm 4111,and the latter, which preferably is a forging, has a square socket 416at its rear end to receive the square tapered end of the bail section311, the latter being secured as by a nut 411 to the bail arm 410,whereby all of the bail parts are rigidly secured together. A sleevemember 420 is mounted on the intermediate bail section 311 adjacent thesector 415 and is formed with a transverse portion 421 in which theforward end of a gauge wheel crank axle 422 is fixed, as by a nut 423.The rear end of the gauge wheel crank axle is turned laterally inwardlyand serves to rotatably receive the gauge wheel 425 which is held inplace by any suitable means. As an integral part of the sleeve member420, the latter carries an extension 421 to which the lower end of agauge wheel adjusting lever 428 is fixed, the lever 428 carrying detentmechanism 429 which cooperates with notches in the sector 415, When thelever 428 is latched to the sector 415, the gauge wheel 425 swingsvertically with the bail 310 about the transverse pivot axis which isdefined by the pivot pins 313 and 411.

The rear transverse section 304 of the tool beam 391 is secured to theintermediate section 311 of the bail 310 by means of a hanger 435, whichincludes a plate 436 to which a pair of inverted U-sha-ged straps 431are fixed, as by welding. The

intermediate section 311 of the bail passes 2,339,225 through the straps431, and the plate436 is rigidsecured to the intermediate section 304 ofthe tool beam 31H by bolts 439 and cross straps 44!; A pair of collars442 carrying set screws 443 are mounted on the intermediate bail section3H on the laterally outer sidesof the hanger yokes'43l. By loosening theset screws 3' the collars and hail hanger may be shiftedto differentpositions along the ball so as to determine'theangular position of thetool beam 3M as a whole relative to the tractor, it being rememberedthat the front end of the toolbeam is confined within the guide bracket320.

. ,The operation of the form of the invention shown in Figures 8-11 issubstantiall'ythe same as the'operation of the forms of the inventiondescribed above. The position of the front furrow" opener 3|!) is gaugedby the tractor throughthe depth adjusting connections 329 an d 342; thechain 351 normally being slack soas to permit the rear end ofthe toolbeam to swing up and ground surface, From Figure 9 it will be noted thatthebail arms 312 and Ill) extend generally downwardly and forwardly fromthe connection of the intermediate bail section 3'" with the tool 'beamso that there is a downwardcomponent of the draft pull tending to insureproper penetrationof the front disk 3m, the penetration be 'ing limitedby the depthadjusting lever 3 28 and lock nuts 346. The depth ofpenetration of therear disk 3! is limited by the position of the chain391 against the tool bar or beam 3!. The point of connection of thechain with the beam is so disposed that the front furrow opener is firstraised, followed by the raising of the rear furrow opener. During theraising and lowering of the beamtlll relative to the tractor, the bail310 swingsabout its pivot axis, and since the hand ground which, ineffect, addsto the rear end of the tool beam 3M the weight of the gaugewheel, thus additionally'resisting the upward displacement of the rearfurrow opener. While I have shown and described above thepreferredstructure inwhich the principles of the present invention havebeen incorporated, it

is to be understood that my invention is not to "be limited to theparticular details shown and 'down to accommodate irregularities in thedescribed above, but that, in fact, widely different means may beemployed in the practice of the broader aspects of my invention f What Iclaim, therefore, and desire to-secure by Letters Patent is: V

1. an agricultural implement comprising means serving'as a supportingframe,- a generally longitudinally extending beam movably connected withsaid supporting frame means, a draft transmitting bail having its bightportion pivotally connected with the rear portion of said beam and itsend portions pivotally connected with said supporting frame means atpoints generally below the bight portion of said ball, whereby there isadownward component effective against said beam, and tool means,connected with said beam both forwardly and rearwardly of said bail.

' 2. An agricultural implement comprising means serving as asupportingframe, a tool beam connected at its forward end with said supportingframe means, tool means carried by said tool beam, the rear end of thelatter being arranged for generally free vertical swinging movement inboth directions relative to said supportingframe means, and drafttransmitting means connected with said supporting frame means and therear portion of said tool beam.

' 3.1 The combination with a tractor. having ground engaging drivemeans, of a generally longitudinally extending tool beam, meansconnecting the latter with the tractor for generally Vertical movementand movement about a. transverse axi whereby to accommodate the passageof the lever 428 latches the rearwardly extending gauge wheel crankaxle422 with the bail so as to form a rigid. part thereof, itwill'be seenthat the gaugewheel 425 moves through a greater extent of verticalmovement than the adjacent rear furrow opener m. In the constructionillustrated, the

, gauge wheel moves verticall no less thanjtwice the verticaldisplacement'of the adjacent furrow opener. that the rear furrow openerismaintained at substantially constant depth of operation. If, forexample, the rear furrow strikes a soft spot and tends to run deeperthan desired, the corresponding downward movement of the rear portion ofthe beam 30f causes an accelerated downward This, construction has theadvantage- 'said transverse axis.

tractor over uneven ground, and tool means connected with said tool beamboth fore and aft of 4. The combination with a tractor having groundengaging driving means, of a generally longitudinally extending toolbeam, means 'movably connecting the latter with the tractor andincluding a generally horizontally disposed member pivoted to thetool'beam and to the tractor,

' whereby the tool beam is free to move ither'iip movement of the,rearwardly disposed gauge wheel 425, the extent of movement of thegauge wheel being greater than the corresponding movement of the reardisk. Thus, th gauge wheel is effective to prevent such downwarddisplacement of the furrow opener. Likewise, if the rear disk shouldstrike a hard spot and tend to rise, carrying with it the rear" end ofthe tool beam 31", such upward movement of the latter acts to swing thegauge wheel 425 in a generally ve tical direction faster than the reardisk, therelifting the cause wheel 425 entirely oh the wardly ordownwardly relative to the tractor,. said horizontally disposed memberserving 'to transmit draft loads to the tool beam, tool means connectedwith'said tool been: both fore and aft of said, driving means andincluding front, and rear furrow openers, means for gauging the depth ofoperation of the front furrow opener from the tractor, and a groundengagin gaugeuwheel for determining the operating depth of the rear fur1 row opener.

5. The combination. with a tractor having ground engaging drivemeans, ofa generally longitudinally extending tool beam, means connect-- ing thelatter intermediate its ends with the tractor for generally verticalswinging about a transverse axis, tool means connected with the frontand rear end portions of said tool beam, and means reacting against thetractor for limiting the downward movement of the tool beam about saidtransverse axis.

6. The combination withla tractor, ofan implement comprising a generallylongitudinallyex tending tool beam, draft means connecting the front.end ofsaid tending tool beam having a rear means on the tractor at theother end ofsaid axle and rear drive wheels,-a generally longitudinallyextending tool beam extending fore and aft of the drive wheels of thetractor,'bail means swingably connectin the rear portion of said.

tool beam with the tractor, whereby said rear portion ofthe tool beam iscapable of relatively free vertical movement relative to the tractor.ground engaging tool means securedrto the forward portion of said toolbeam, means connecting the forward end portion of said tool beam withthe tractor at a point forwardof the rear wheels whereby the tractorserves to determine the depth of operation of said forward tool means,rear tool means connected with the rear portion of saidgenerallylongitudinally extending beam, and gauge means connected with the latterfor gauging the depth of operation of the rear .tool means. V

8. In an agricultural implement, the combination ofa tractor having arear axle and drive wheels therefor, a generally longitudinallyextendingtool beam extending both fore and aft of aid rear axle and between thedrive wheels tool beam both fore and aft of said rear axle, and meanswhereby the side thrust of said tool means istaken by the tractor,saidlatter means including adjustable parts adapted to vary the angularposition of said tool beam relative to the tractor in a generallyhorizontal plane, whereby to ad- Just the width of cut of said toolmeans.

9. A combination set forth in claim 8, further characterized by: meansconnecting opposite end portions of said tool beam with the tractor andincluding mechanism for shifting one end portion of the tool beamgenerally laterally relativeto the tractor. I v

10. In a plowing implement, means serving as a supporting frame, agenerally longitudinally exmovably connected with the supporting framemeans, a furrow opener secured toeach end portion of said tool beam,stop means limiting the upward movement of the front end portion of saidtool beam, and raising means connected with the generally centralportion of said tool beam but forward of the center of gravity of saidtool beam andfurrow'openers, whereby operation of said raising meansfirst raises the front end of the tool beam and theniraises the rear endafter said sto means limits the upward movement of the front end.

11. In a plowing implement, means serving as a supporting frame, agenerally longitudinally extending tool beam movably connected with thesupporting frame means for both vertical and lateral swinging movementsfurrow opener securedto each end portion of said tool beam, and meansfor loading the side thrust due to said furrow openers onto saidsupporting frame means.

. of the tractor, tool means connected with said furrow but above thefurrow bottom, whereby 12; In combination, a tractor, a toolbearn ex--tending generally longitudinally thereof, means tool beam serving tolimit the movement thereof relative to the tractor, a plow fixed to saidtool beam between the ends thereof, and a second plow fixed to the rearend of saidtool beam.

13. In combination, a tractor, a tool beam extending generallylongitudinally thereof, means connecting the forward end of said toolbeam with the tractor for both longitudinal and generally verticalmovement, a plow fixed to said tool beam adjacent the forwardendthereof, a bail pivoted on the tractor adjacentthe rear thereof andpivotally supporting the rear portion of said tool beam, and a secondplow fixed to said tool beam rearwardly of said bail, swinging movementof the latter providing for the rear plow following undulations in theground surface.

14. In combination, a tractor having rear wheels, a generallylongitudinally extending tool beam, a slotted bracket carried by thetractor forward of the rear wheelsandreceiving the forward end of saidtool beam, means associated with said bracket for limiting the verticalmovement of the forward end of said tool beam in said slotted bracket, aplow fixed to said tool beam adjacent the forward end thereof, meansmovably connecting the 'rear end of said tool beam with the rear portionof the tractor, a second plow fixed to the rearend portion of said toolbeam, and a. guide wheel carried by the forward end of said tool beam.

15. A plow comprising the combination with a. tractor having rear wheelof a generally 1ongitudinally extending tool beam, a. furrow openersecured to the front and rear end portions of said tool beam anddisposed fore and aft, respectively, of the associated tractor wheel,means connecting said tool beam with the tractor whereby there is acomponent of the draft pull that serves to force said furrow openersinto the ground, and means for controlling the depth'of operation ofsaid furrow openers including an adjusting lever pivotally mounted onthe tractor and connected with the forward portion of said tool beam.

16. A plow comprising the combination with a tractor of a generallylongitudinally extending tool beam, means connecting the latter with thetractor so as to impose on the latter lateral and vertical forcesincident in the operation of the plow, a furrow opener connected withsaid-tool beam, a guide wheel adjustably connected with said tool beamand disposed laterally relative to said furrow opener so as to' run'inthe furrow opened on the previous round, and means for adlusting saidguide wheel so as to run in said some of the vertical forces are imposedon the tractor, said guide wheel being also adjustable to a position inwhich at least some of said vertical forces are imposed on said guidewheel.

17. The combination with a tractor having front and rear wheels, agenerally longitudinally extending tool bar, a pair, of moldboard plowbottoms fixed to said tool beam both fore and aft of the adjacent rearwheel of the tractor, means connecting said tool beam with the tractor,and means for leveling said tool beam relative to the tractor so a tocause said plow bottoms to run level. 18. An agricultural implementadapted to be connected with a farm tractor and comprising a generallylongitudinally extending tool beam. means connecting the front end ofthe latter to the tractor for generally vertical movement, a bailswingably connected with the rear portion 'of the tractor, meansconnecting said bail with the rear portion of said tool beam, a pair ofmoldboard furrow openers fixed to said tool beam fore and aft of theadjacent rear tractor wheel, and

means reacting against said ball for changing the position of the toolbeam to level said moldboard furrow'openers.

19. In combination, a, tractor, a. bailpivotally connected to the.tractor, a generally longitudinally extending tool beam connected atits forward end with the tractorand at its rear end with said bail, toolmeans connected with said beam, and means for shifting the rear end ofthe beam laterally along the bail and holding, v

15 of the latter, a bail serving to connect the rear the rear end of thebeam in any one of aplurality of laterally adjusted positions along saidbail.

20. In combination, a tractor, a guide bracket secured to the forwardportion of the tractor and,

serving as a vertically elongated slot, a. bail pivoted to the rearportion of the tractor, a generally longitudinally extending tool beamhaving its forward endslidably disposed in the slot in said guidebracket, tool means connected with said beam rearwardly of said bail,means connecting the latter with said beam in draft transmittingrelation, and means limiting the movement of -the beam in said slot inone direction. I 21. In combination, a tractor, a guide bracket.

secured tothe forward portion of the tractor, a

bail pivoted to the rear portion of the tractor, a:

generally longitudinallyextending tool beam connected at its forward endwith the tractor through said guide bracket, tool means connected withsaid beam rearwardly of said bail, a member carried by the bail andadapted to be shifted later ally relative thereto, and means fixing saidmember to said beam ,in draft transmitting relation.

'22. An agricultural implement comprising supporting means, a tool beamdisposed generally longitudinally thereof and connected therewithadjacent its forward end, a'bail pivotally connected with saidsupporting means, means pivotally connecting the intermediate portion ofsaid bail with the rear portion of said beam, tool means carried by thelatter adjacent said bail, and ground engaging gauge means connectedrigidly with said bail and disposed rearwardly thereof so that swingingmovement of said bail raises and lowers said gauging means through agreater extent than the corresponding movement of said tool means.

23. In combination, a tractor of the table type, an implement connectedtherewith at one side of the tractor for limited movement relativetheretoin a generally vertical direction, and laterally outwardlyextending ground engaging means connected with said implement andserving, after said relative movement reaches its, limit, to prevent thetractor from tipping over toward said a one side.

24. In combination, a tractor, a plowing implement connected therewithand including a generally longitudinally extending beam and furrowopening means secured thereto, a member mounted for rocking movement onsaid beam and extending laterally outwardly from said one side of thetractor, and ground engaging means carried at the laterally outer end ofsaid member and adapted to prevent the tractor from tipping over towardsaid one side.

25. An agricultural implement comprising means serving as a supportingframe, a generally longitudinally extending beam separate from andmovably connected with said supporting frame means, means on the latterconnected with the generally intermediate portion of said beam forraising the latter relative toisaid supporting frame means, tool meansco'nnectedwith said beam both fore and aft of said raising means, i 5and means at the frontend portion of said beam for accommodating alimited amount of upward movement of the front end portion of said beamsumcient to raise the fronttool meansbefore the rear tool means israised. I

26. An agricultural implement comprising the combination with atractorhaving a rear axle, of a generally longitudinally extending beam,means connecting the forward end of said beam with the tractor adjacentthe forward portion portion of said beam with the tractor in drafttransmitting relation and accommodating vertiv c'al movement of saidbeam relative to the tractor, bracket means carried by the rear axle ofv the tractor to which said bail is pivotally connected, and meansreacting against said bracket. means and connected with the intermediateportion of said beam for raising the latter relative to the tractor. v27. In a tractor mounted implement, a beam extending generallylongitudinally of the tractor underneath the rear axle. thereof, abracket member secured to the rear axle at the rear side thereof, meansconnecting said. beam with said bracket, the latter, extending upwardlyand forwardly relative to said rear axle, a second bracket secured tosaid rear axle at the front side thereof opposite said first mentionedbracket, a brace member extending underneath said rear axle and I '35connecting said brackets, an arm pivotally connected with the upper andforwardly directed portion of said first bracket, means connecting theouter end of said arm with said beam, and lifting mechanism reactingagainst said brace and 0 operatively connected with said aim forswinging the latter to raise said beam relative to the tractor.

28. An agricultural implement comprising means serving as a supportingframe, tool carry,- ing means pivotally connected with said supportingframe means, a bailpivotally connecting the tool carrying meansv withsaid supporting frame means, and gauging means connected with said bailrigidly at a point spaced from the point of said first pivotalconnection. I

29. An agricultural" implement comprising means serving as a supportingframe, tool carrying means, a bail pivotally connecting the latter withsaid supporting frame means for'inovement about an axis, a tool on saidtool carrying means," and gauging means connected rigidly with said bailand extending in a direction away from said axis whereby a givenmovement of the tool carry-v ing means causes a greater movement of thegauging means. I

30. In an agricultural implement, a swingable member, a tool connectedtherewith, and gauging means including apart swingable about an axis anda, ground engaging means secured to said part, said part being connectedwith said'member at a point between said axis and said ground engagingmeans so that swinging movement of said member moves said groundengaging means farther than said tool. a

31. The combination with a tractor, of a tool carrying member, meanspivotally connecting the latter with the tractor, gauge. means for saidtool carrying member also connected with the tractor, and meansconnecting said vgauge means with said member at such a point thatmovement 12 I aaae'jcas said tool beam and having a part extending inone direction from said pivot point and a second part extending inanother direction, a tool on the rear portion of said tool beam, a gaugewheel on one of said parts, and means connecting the bther part with thetractor whereby a given extent of downward movement of the portion ofsaid tool beam carrying said tool causes a greater extent of downwardmovement of said gauge wheel. I

33. The combination with a tractor; of a tool carrying member connectedat its forward end with the tractor, a tool at the rear portion of saidmember, a member swingably connected with said tool carrying member formovement relative thereto about an axis and including a part extendinggenerally rearwardly 'fromsaid axis and apart extending forwardlytherefrom, a gauge wheel journaled on the rearwardly extending part, andmeans connecting the forwardly ex tending part with the tractor, wherebya down ward movement of the tool carrying member through a given extentrelative to the tractor causes a greater extent of movement of said augewheel.

34. The combination with a tractor having a ground engaging drive means,of a generally longitudinally extending tool beam, tool means connectedwith said tool beam both fore and aft of said drive means and arrangedwhereby th latter takes substantially all of the side thrust of saidtool means, and means connecting said tool beam with the tractor forlateral movement about a generally vertical axis and vertical movementabout a generally transverse axis with respect to the tractor. Y

35. The combination with a tractor, of an implement comprising agenerally longitudinally extending tool beam, draft means connecting the1 latter with the tractor, ground engagingtool 'meangconnected with saidbeam fore and aft of-said draft applying means, said draft means beingconstructed so that the draft pull reacts against one of said tool meansto forc the other into the ground, means connected with one end portionof the tool beam to limit the downward movement of that end of the toolbeam so as to hold the associated tool'means at the desired depth, theother end portion of said tool beam being movable generally freelyvertically rela-' tive to the tractor, and ground engaging gauge meansat the other endportion of said tool beam for limiting the downwardmovement of that end of the tool beam.

36. An agricultural :implement comprising means serving as a supportingframe, a generally longitudinally extending beam movably connected withsaid supporting frame means. a draft transmitting bail pivotallyconnecting the rear portion of said beam with said supporting framemeans whereby the rear end of said beam is capable of relatively freevertical movement with respect to the supporting frame means, tool meansconnected with said beam both foreand aft of said bail, means on thesupporting f frame means for raising the front end of said beam relativeto the rear end to adjust the depth of operation of said front toolmeans, and ground engaging means connected with the rear I end portionof said tool beam for determining the depth of operation of said reartool means.

e 37. An agricultural implement comprising means serving as a supportingframe, -a gen- 'erally longitudinally extending beam movably connectedwith saidsupporting frame means, a draft transmitting bail pivotallyconnecting'the rear portion of said beam with said supporting framemeans whereby the rear end of said beam is capable of relatively freevertical movement with respect to the supporting frame means, tool meansconnected with said beam both fore and aft of said ball, means on thesupporting frame means for raising the front end of said beam relativeto the rear end to adjust the depth of :0 operation of said front toolmeans,'and means for shifting the rear portion of said tool beamrelative to said ball for. determining the lateral position of the reartool 'means with respect to said supporting frame means.

cycle type having laterallyspaced rear wheels and a central front wheelmeans, an implement connected with the tractor and including a groundwheel disposed laterally outwardly of a line conso necting 'said frontwheel means and the rear wheel at one side of the tractor, and means forlimiting the extent of relative movement between the tractor and said-wheel whereby the latter serves to'prevent the tractor from tippingover the tractor at said one side, the rear portion including a sectionextending laterally generally parallel to said central bailsection and asecond section extending generally rearwardly therefrom, meansconnecting said parallel sections,

, and tool means connected with said rearwardly extending tool beamsection.

40. An implement comprising the combination with a tractor havinga rearaxle, of a generally longitudinally disposed tool beam extendingundemeath said rear axle, tool means therefor, and

a draft transmitting member connecting the rear portion of said toolbeam with the tractor and angled downwardly whereby there is a componentof the draft pull that serves to force the tool means into the ground.

.60 41. An implement comprising the combination with a tractor having arear axle, of a generally longitudinally disposed tool beam extendingunderneath said rear axle. tool means therefor disposed both fore andaft of said rear axle, means connecting the front end of said beam withthe tractor for relative movement in a generally lon- 'gltudinaldirection, and a draft transmitting member pivoted to the tractor and tothe too;

beam between said tool means in draft-transmit- 7 ting relation anddisposed at such an angle whereby there is a component of the draft pullthat serves to force the tool means into the ground.

CARL G. STRANDLUND.

, 38. The combination of a tractor of the tri-"-

